. >> susie: that and more tonight on nbr! >> tom: a lengthy courtship finally resulted in the marriage today between conagra foods and ralcorp. conagra is paying $5 billion to buy private label food giant ralcorp. that works out to $90 a share, a nearly 30% premium to ralcorp's closing stock price on monday. the deal will make conagra the largest manufacturer of private label foods. suzanne pratt takes a look at what's become a booming business. >> reporter: it used to be consumers would buy private label products to clean their bathrooms or wash their clothes. lately, however, they're eating them, too. from sodas to peanut butter, private label brands are shaking off the yuck! stigma and attracting value-conscious customers. and it's the popularity of private label food that's behind the tasty conagra-ralcorp deal. >> private label, otherwise known as store brands, is gaining traction with retailers and shoppers. in fact, store brands have been growing faster than branded food for some time, and we expect that to continue. >